计算机工程2011，Vol.37Issue(20)：145-148,4.DOI:10.3969/j.issn.1000-3428.2011.20.050
一种DCT变换域的鲁棒数字水印
Robust Digital Watermark on DCT Transform Domain
摘要
Abstract
After taking binary image as watermark, this paper proposes a robust digital watermark arithmetic based on Discrete Cosine Transform(DCT) transformation domain. The watermark image is scrambled, and scramble number is used as the key when extracting watermark, then the watermark image and initial image respectively in block DCT transform are transformed. Each block of the watermark image is embedded into a plurality of the blocks of the initial image in order to make the embedded watermark have strong robustness. Experimental results prove that the arithmetic is of better robustness, invisibility, and resistance the attack to loss compression, cropping, randomly altered, white noise and so on.关键词
分块离散余弦变换/鲁棒性/数字水印/Arnold置乱/不可见性Key words
block Discrete Cosine Transform(DCT)/ robustness/ digital watermark/ Arnold scramble/ invisibility分类
信息技术与安全科学引用本文复制引用
黄西娟,王冰..一种DCT变换域的鲁棒数字水印[J].计算机工程,2011,37(20):145-148,4.基金项目
陕西省科技攻关计划基金资助项目(200405-G25) （200405-G25）
